# #1663d0

A color — cool, vivid, technical, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#1663d0`
- RGB: rgb(22, 99, 208)
- HSL: hsl(215, 81%, 45%)
- OKLCH: oklch(0.521 0.183 258.8)
- Relative luminance: 0.1365
- Nearest named color: Denim (#1560bd, Δ 3.034) — https://brandsweets.com/colors/denim
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1663d0

## Tints & shades

- Tints (toward white): #186ee7, #3480ea, #4b8eec, #629def, #7eaef1, #95bcf4, #accbf6, #c3d9f9, #dfebfc, #f6f9fe
- Shades (toward black): #145abd, #1252ab, #104998, #0e4086, #0c3773, #0a2c5c, #08234a, #061a37, #041225, #020912

## Harmonies

- Complementary: #d08216
- Analogous: #16c0d0, #2516d0
- Triadic: #d01663, #63d016
- Split-complementary: #d02516, #c0d016
- Tetradic: #d016c0, #d08216, #16d025

## Colors that go with #1663d0

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #1663d0: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #1663d0 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Foot Locker (https://brandsweets.com/colors/brands/footlocker-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Netflix (https://brandsweets.com/colors/brands/netflix), Ulta Beauty (https://brandsweets.com/colors/brands/ulta-com). — https://brandsweets.com/colors/crimson
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #1663d0 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Dyson (https://brandsweets.com/colors/brands/dyson-com). — https://brandsweets.com/colors/sienna
- **Amber** #ffbf00 [pool] — Amber is paired with #1663d0 in 9 real palettes, including NBA's brand system and Wikipedia's brand system, as the lead colour. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Walmart (https://brandsweets.com/colors/brands/walmart-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 16 real palettes, including Pixar's brand system and Headspace's brand system put Blue beside #1663d0, as the accent. Seen in: Pixar (https://brandsweets.com/colors/brands/pixar-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), Activision (https://brandsweets.com/colors/brands/activision-com), BBC (https://brandsweets.com/colors/brands/bbc-com). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #1663d0: 8 real palettes, including NBA's brand system and Coca-Cola's brand system, as the accent. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), Webflow (https://brandsweets.com/colors/brands/webflow-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #1663d0: 7 real palettes, including Venmo's brand system and Astro's brand system, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Astro (https://brandsweets.com/colors/brands/astro-build), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Elastic (https://brandsweets.com/colors/brands/elastic-co). — https://brandsweets.com/colors/deepskyblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #1663d0: 8 real palettes, including Apple's brand system and HashiCorp's brand system, as the supporting colour. Seen in: Apple (https://brandsweets.com/colors/brands/apple-com), HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com), ASUS (https://brandsweets.com/colors/brands/asus-com), Coursera (https://brandsweets.com/colors/brands/coursera-org). — https://brandsweets.com/colors/dodgerblue

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 5.63:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1254af (7.21:1)
- On black (#000000): 3.73:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1d71e7 (4.57:1); AA: background → #e6e6e6 (4.51:1); AAA: text → #5997ee (7.09:1)

## Brands using this color

- **Postman** — accent #0265d2 (Δ 0.689) — https://brandsweets.com/colors/brands/postman-com
- **Fitbit** — secondary #1967d2 (Δ 1.101) — https://brandsweets.com/colors/brands/fitbit-com
- **Strava** — accent #0060d0 (Δ 1.116) — https://brandsweets.com/colors/brands/strava-com
- **Apple** — accent #0066cc (Δ 1.125) — https://brandsweets.com/colors/brands/apple-com
- **Dyson** — accent #0066cc (Δ 1.125) — https://brandsweets.com/colors/brands/dyson-com
- **Unilever** — accent #0066cc (Δ 1.125) — https://brandsweets.com/colors/brands/unilever-com
- **Box** — primary #0061d5 (Δ 1.169) — https://brandsweets.com/colors/brands/box-com
- **Box** — secondary #0061d5 (Δ 1.169) — https://brandsweets.com/colors/brands/box-com
- **HashiCorp** — primary #2264d6 (Δ 1.196) — https://brandsweets.com/colors/brands/hashicorp-com
- **HashiCorp** — accent #2264d6 (Δ 1.196) — https://brandsweets.com/colors/brands/hashicorp-com
- **YouTube** — accent #065fd4 (Δ 1.385) — https://brandsweets.com/colors/brands/youtube-com
- **Nissan** — accent #005fcc (Δ 1.487) — https://brandsweets.com/colors/brands/nissanusa-com
- **NBA** — secondary #0268d6 (Δ 1.488) — https://brandsweets.com/colors/brands/nba-com
- **Khan Academy** — accent #0069d6 (Δ 1.688) — https://brandsweets.com/colors/brands/khanacademy-org
- **Philips** — secondary #0b5ed7 (Δ 1.784) — https://brandsweets.com/colors/brands/philips-com

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/1663d0-9ca8c4-df5d4e-201f2d-e9f0f1?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#1663d0" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.